feat(SearchOverlay): persist search state across overlay open/close cycles

src/app/components/SearchOverlay.tsx

@@ -127,6 +127,19 @@ function scanPhaseLabel(phase: ScanPhase, value: number): string {
 type SortField = 'name' | 'size';
 type SortDir = 'asc' | 'desc';
 
+// Persisted across overlay open/close cycles (survives unmount).
+const _store = {
+  query:          '',
+  results:        [] as SearchResult[],
+  hasSearched:    false,
+  showFilter:     false,
+  filterSystem:   null as string | null,
+  filterVideo:    null as string | null,
+  filterLanguage: null as string | null,
+  sortField:      'name' as SortField,
+  sortDir:        'asc'  as SortDir,
+};
+
 function FilterChips({
   label, values, selected, onSelect,
 }: {
@@ -153,29 +166,42 @@ function FilterChips({
 }
 
 export default function SearchOverlay({ config, setConfig, onClose, onOpenFolder }: SearchOverlayProps) {
-  const [query, setQuery] = useState('');
+  const [query, setQuery] = useState(() => _store.query);
   const [isSearching, setIsSearching] = useState(false);
   const [isScanning, setIsScanning] = useState(false);
   const [scanPhase, setScanPhase] = useState<ScanPhase | null>(null);
   const [scanValue, setScanValue] = useState(0);
-  const [results, setResults] = useState<SearchResult[]>([]);
+  const [results, setResults] = useState<SearchResult[]>(() => _store.results);
-  const [hasSearched, setHasSearched] = useState(false);
+  const [hasSearched, setHasSearched] = useState(() => _store.hasSearched);
   const [mountEntry, setMountEntry] = useState<SearchResult | null>(null);
   const [actionEntry, setActionEntry] = useState<SearchResult | null>(null);
   const [searchError, setSearchError] = useState<string | null>(null);
   const [dbBytes, setDbBytes] = useState<number | null>(null);
   const [dbPhase, setDbPhase] = useState<'idle' | 'downloading' | 'ready'>('idle');
-  const [showFilter, setShowFilter] = useState(false);
+  const [showFilter, setShowFilter] = useState(() => _store.showFilter);
-  const [filterSystem, setFilterSystem] = useState<string | null>(null);
+  const [filterSystem, setFilterSystem] = useState<string | null>(() => _store.filterSystem);
-  const [filterVideo, setFilterVideo] = useState<string | null>(null);
+  const [filterVideo, setFilterVideo] = useState<string | null>(() => _store.filterVideo);
-  const [filterLanguage, setFilterLanguage] = useState<string | null>(null);
+  const [filterLanguage, setFilterLanguage] = useState<string | null>(() => _store.filterLanguage);
-  const [sortField, setSortField] = useState<SortField>('name');
+  const [sortField, setSortField] = useState<SortField>(() => _store.sortField);
-  const [sortDir, setSortDir] = useState<SortDir>('asc');
+  const [sortDir, setSortDir] = useState<SortDir>(() => _store.sortDir);
 
   useEffect(() => {
     if (isLocateDbLoaded()) setDbPhase('ready');
   }, []);
 
+  // Persist search state so it survives overlay close/reopen.
+  useEffect(() => {
+    _store.query          = query;
+    _store.results        = results;
+    _store.hasSearched    = hasSearched;
+    _store.showFilter     = showFilter;
+    _store.filterSystem   = filterSystem;
+    _store.filterVideo    = filterVideo;
+    _store.filterLanguage = filterLanguage;
+    _store.sortField      = sortField;
+    _store.sortDir        = sortDir;
+  }, [query, results, hasSearched, showFilter, filterSystem, filterVideo, filterLanguage, sortField, sortDir]);
+
   const handleSearch = async () => {
     if (!query.trim()) { toast.error('Please enter a search term'); return; }
     setIsSearching(true);